Gas water-heater.



A. RASANEN.

GAS WATER HEATER.

APPLICATION FILED APR. 12. 1915.

CCCCCCCC PLANDGIIAPH CO.,WMHINOTON. D. t.

Patented Aug. 3, 1915.

2 SHEETSSHEET 1- A. J. RASANEN.

GAS WATER HEATER.

APPLICATION FILED APR. 12. 1915.

Patented Aug. 3, 1915.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH 60., WASHINGTON, D- c GAS WATER-HEATER.

Application filed April 12, 1915.

To all whom it may concern Be it known that I, ANDERS J. RAsANnN, acitizen of the United States, residing at Springfield, in the county ofHampden and State of Massachusetts, have invented a new and usefulImprovement in Gas Water- Heaters; and I do hereby declare thefollowing, when taken in connection with the accompanying drawings andthe characters of reference marked thereon, to be a full, clear, andexact description of the same, and which said drawings constitute partof this application, and represent, in

Figure 1 a side view of a water heater constructed in accordance with myinvention. Fig. 2 an underside view of the same. Fig. 3 an enlarged viewof the inner section, detached. Fig. 4: an enlarged view in verticalsection.

This invention relates to an improvement in gas water heaters such asmay be made in small sizes and located closely to the point ofdischarge, or may be made in larger sizes and located at a convenientpoint for distribution to the water pipe system of a house or otherbuilding.

The object of this invention is to provide a simple device including aplurality of sections between which the heat may extend, and so thatrapid heating of water in the device would be secured; and the inventionconsists in the construction hereinafter described and particularlyrecited in the claims.

In carrying out my invention, the heater comprises an outer shell orcasing 2 the uper end 3 of which is rounded. This outer shell has doublewalls 4 and 5 forming a chamber 6 between them into which chamber opensa supply pipe 7. Within the outer shell or casing are a series ofsmaller shells 8, 9, 10 and 32, more or less in number, the upper endsof each curved so that their inner ends come into the same plane arounda central opening. The inner shells 8, 9, 10 and 32 are spaced apart soas to provide heat passages 11, 12, 13 and 14:, through which heat mayrise from a burner 15 arranged below the sections, but preferablyinclosed by the outer walls of the outer casing. The

Specification of Letters Patent.

Patented A11 3, 1915.

Serial No. 20,869.

straight portions of the sections 8, 9, 10 and 32 are preferably formedrespectively with spiral grooves 16 more or less in number in which arelocated connecting pipes 17. The pipes respectively encircling theseveral sections enter those sections at the bottom, while the upperends of the pipes are connected with the adjacent outer section, thatis, the outer passage 6 is connected near the upper end with four pipes18 which surround the section 8, these pipes 18 entering the section 8at the bottom indicated at 19. The section 8 connects near its upper endwith four pipes 20 which are coiled around the section 9 entering thatsection 9 at 21. The upper end of the section 9 is connected with fourpipes 22 which surround the section 10 and which enter that section at23, and this section 10 opens near its upper end into four pipes 24which surround the section 32 and entering the same at 33, from whichwater passes into a mixing drum 30 at the top of pipes 25, 26, 27 and28, and from which the water asses downward through the pipes 25, 26, 2and 28 to an outlet pipe 31 through which the water may be discharged.'By crowning or bowing the upper ends of the several sections the heatpassing up between the sections will be confined and greatly assist inheating the water in the several sections, so that with my device thewater is heated in a very short time.

I claim 1. A water heater comprising a plurality of sections curved attheir upper ends and spaced apart, coils surrounding the inner sections,said coils opening at their lower ends into the sections which theysurround, said coils connected at their upper ends with the nextadjacent outer section.

2. A water heater comprising a plurality of concentric sections theupper ends of which are turned inward, the inner sections formed withspiral grooves, pipes located in said grooves and opening at the lowerends into the sections which they surround and coupled at their upperends with the adjacent outer sections.

3. A water heater comprising a plurality of concentric sections theupper ends of ing drum into which the upper ends of the which are bowedinward, a series of pipes vertical pipes discharge, vertically arrangedsurrounding the several sections, said pipes pipes opening from saiddrum, an inlet into 10 connected at the lower ends of the sections theouter section, and an outlet from the Which they surround and theirupper ends discharge pipes from said drum.

With the adjacent outer sections the inner sections connected Withvertical pipes, a mixg 7 g V RASANEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

, Washington, D. G.

